Lock.



G. B. KOHLER.

LOCK.

APPLICATION FILED n12.29, 1910.

Patented May 14, 1912.

SE SEE HI W 615011 115 KoELm UNITED STATES PATENT OFFTCFJ.

GEORGE B. KOHLER, OF PHILADELPHIA,PENNSYLVANIA, ASSIGNOR TO THE J. G.

BRILL COMPANY, OF PHILADELPHIA, PENNSYLVANIA, A CORPORATION OF PENN-SYLVANIA.

LOOK.

Specification of Letters Patent.

Patented May 14, 1912.

To all whom it may concern:

Be it known that I, GEORGE B. KOHLER, a citizen of the United States,residing in Philadelphia, Pennsylvania, have invented certainImprovements in Locks, of which the following is a specification.

'My invention relates to certain improvements in looks used inconnection with fare boxes, but it will be understood that it may beused for other purposes without departing from the essential features ofthe invention.

The object of the invention is to provide a simple and effective lockwhich will engage and firmly hold a sliding lid to the body of the farebox or other receptacle.

In the accompanying drawings :Figure 1, is a perspective view of therear of the lock; Fig. 2, is a perspective view of the front of thelock; Fig. 3, is a sectional view on the line 33, Fig. 4:; Fig. 4, is asectional view on the line 4=4, Fig. 3; Fig. 5, is a perspective viewshowing the main elements of the lock detached; Fig. 6, is a perspectiveview of the keeper; Figs. 7 and 8, are views of modifications of myinvention, and Fig. 9, is a view of a fare box showing my improved lock.

A is the main plate of the lock having a flange a at its upper edge anda quadrangular opening a in the present instance through which thekeeper B passes when the lid to which the keeper is attached is closed.

C is the casing of the lock secured to the plate by screws 0 in thepresent instance, and C is an extension of this casing inclosing thetumblers and washers of the lock.

D is a hub which extends through the lock and has a key-way cl thereinand secured to the end of this hub is the cam D which actuates the twobolts E, shown clearly in Fig. 5.

The detail construction of the hub, tumblers and washers I have omittedas they form no part of the present invention and may be constructed inany manner common to a type of lock in which the tumblers are carried bya cylindrical projection, as shown.

The two bolts E-E are pivotally mounted on pins e-e secured to thecasing of the lock, and their upper ends e engage the keeper which isprojected through the opening a. Each bolt is notched at 6 so as toaccommodate the fixed plate a projecting from the plate A at the base ofthe opening a. This plate a prevents tampering with the look as itcloses the space between the sides of the casing O. Back of each bolt Eis a spring F. These springs tend to force the bolts toward each other.The cam D which is mounted on the hub D is located between the twobolts, as shown in Fig. 3, and the enlarged portions d press against theprojections 71 on the bolts E when the hub is turned, forcing the jawsapart and releasing the keeper B. Stops (Z are formed on the cam tolimit its movement. As soon as the enlarged portions d pass theprojection 2' the springs F return the bolts to their normal position.The bolts can be forced apart by the arrow-head b of the keeper B andthey will spring back of the arrow-head, holding the keeper in positionuntil spread apart when the key is inserted and turned.

In Fig. 7, I have illustrated a modification of the lock in which asingle bolt is used instead of a double bolt, and in this case anarrow-head with a single prong may be used instead of a double prong, asshown.

In Fig. 8, I have shown the edges of the bolts EE tapered and the keeperhaving a square head.

It will be seen by the above construction that I make a very simple andeffective lock which can be used with any type of tumbler arrangementand which will effectively hold the sliding cover of a box or othercontainer, as shown in Fig. 9, and which cannotbe readily tampered withwhen the cover is closed.

I claim:

1. The combination in a lock, of a plate having an opening therein, acasing, a pivoted bolt, a spring tending to retain the bolt back of theopening in the plate; a hub, a cam on the hub, a projection on the boltengaged by the cam, a lug on the cam to limit its turning movement, anda keeper shaped to be engaged by the bolt.

2. The combination in a lock of a plate having an opening therein, acasing, two bolts arranged opposite each other, springs tending to bringthe bolts toward each other and back of the opening in the plate,

a hub, a cam on the hub, projections on the name to this specification,in the presence of bolts engaged by the cam, and lugs on the twosubscribing Witnesses. cam to limit the turnin movement, With a keepershaped to be engaged by the bolts GEORGE KOHLER' 5 when projectedthrough the opening in the Witnesses:

plate. WM. E. SHUPE, In testimony whereof, I have signed my TM. A. BARR.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents. Washington, D. G.

